123456789101112#include int main()//没主函数{ double n=1,s=0; do { s=s+2/(n*n-n+2); n++; }while((2/(n*n-n+2))>=0.000001); printf("s=%lf\n",s); return 0;}缺少 main 入口
#include int main()//没主函数{ double n=1,s=0; do { s=s+2/(n*n-n+2); n++; }while((2/(n*n-n+2))>=0.000001); printf("s=%lf\n",s); return 0;}
缺少 main 入口
